/* ==========================================================================
   快连 LetsVPN 官方落地页样式表
   设计风格：扁平化风格 | 渐变极光色配色 | 悬浮重叠图层布局 | 核心视觉：粗体无衬线字
   骨架参数：1200px 容器 | 主底 #F4F7FC | 间隔区 #EDF1FA | 页脚 #0B1023
   标题 #1A2238 | 说明 #5A6582 | 主色蓝 #4F6EF7
   ========================================================================== */

:root {
  --bg-main: #F4F7FC;
  --bg-alt: #EDF1FA;
  --bg-footer: #0B1023;
  --card-white: #FFFFFF;
  --text-heading: #1A2238;
  --text-body: #5A6582;
  --text-muted: #8492AF;
  --primary-blue: #4F6EF7;
  --primary-blue-hover: #3B59DF;
  --aurora-cyan: #06B6D4;
  --aurora-emerald: #10B981;
  --aurora-violet: #6366F1;
  --aurora-gradient: linear-gradient(135deg, #4F6EF7 0%, #06B6D4 55%, #10B981 100%);
  --aurora-btn-gradient: linear-gradient(135deg, #4F6EF7 0%, #6366F1 50%, #06B6D4 100%);
  --border-light: #E2E8F4;
  --shadow-card: 0 8px 24px rgba(26, 34, 56, 0.05);
  --shadow-float: 0 14px 34px rgba(79, 110, 247, 0.12);
  --radius-md: 12px;
  --radius-lg: 16px;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", -apple-system, BlinkMacSystemFont, sans-serif;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-main);
  color: var(--text-body);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
}

body {
  background-color: var(--bg-main);
  color: var(--text-body);
  line-height: 1.65;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

/* 总骨架容器：1200px，左右各 24px */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 通用区块与交替底色 */
.section {
  padding: 88px 0;
  background-color: var(--bg-main);
}

.section-alt {
  padding: 88px 0;
  background-color: var(--bg-alt);
}

/* 通用居中标题组：最大宽 680px，小标签 + H2 (38px / 800) + 灰色 lead */
.sec-head {
  max-width: 680px;
  margin: 0 auto 56px;
  text-align: center;
}

.sec-tag {
  display: inline-block;
  padding: 5px 14px;
  border-radius: 999px;
  background: rgba(79, 110, 247, 0.1);
  color: var(--primary-blue);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 14px;
}

.sec-head h2 {
  font-size: 2.375rem; /* 38px */
  font-weight: 800;
  color: var(--text-heading);
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}

.sec-lead {
  font-size: 1.05rem;
  color: var(--text-body);
  line-height: 1.7;
}

/* ==========================================================================
   1. 顶栏（固定吸顶，高 72px，三栏 flex，半透明浅底 + 毛玻璃）
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 72px;
  z-index: 100;
  background: rgba(244, 247, 252, 0.96);
  border-bottom: 1px solid var(--border-light);
}

.header-inner {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 900;
  color: var(--text-heading);
  letter-spacing: -0.02em;
}

.logo-mark {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--aurora-btn-gradient);
  color: #FFFFFF;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 1.1rem;
}

.brand-logo span {
  color: var(--primary-blue);
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 36px;
  list-style: none;
}

.header-nav a {
  font-size: 0.96rem;
  font-weight: 600;
  color: var(--text-body);
  transition: color 0.2s;
}

.header-nav a:hover,
.header-nav a.active {
  color: var(--primary-blue);
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-header-solid {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  border-radius: var(--radius-md);
  background: var(--primary-blue);
  color: #FFFFFF;
  font-size: 0.92rem;
  font-weight: 700;
  transition: background 0.2s, transform 0.2s;
}

.btn-header-solid:hover {
  background: var(--primary-blue-hover);
  transform: translateY(-1px);
}

/* 移动端汉堡按钮（纯 CSS checkbox 控制） */
.nav-toggle-checkbox {
  display: none;
}

.hamburger-btn {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid var(--border-light);
  background: var(--card-white);
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.hamburger-lines {
  width: 18px;
  height: 2px;
  background: var(--text-heading);
  position: relative;
}

.hamburger-lines::before,
.hamburger-lines::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: var(--text-heading);
}

.hamburger-lines::before { top: -6px; }
.hamburger-lines::after { top: 6px; }

/* ==========================================================================
   2. Hero（约一屏，高约 900px，桌面两列 flex，gap 60px，左右 560 / 520）
   背景很淡的网点，无大光斑
   ========================================================================== */
.hero-section {
  min-height: 900px;
  padding: 132px 0 72px;
  display: flex;
  align-items: center;
  position: relative;
  background-color: var(--bg-main);
  background-image: radial-gradient(rgba(79, 110, 247, 0.14) 1px, transparent 1px);
  background-size: 28px 28px;
}

.hero-flex {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 60px;
}

.hero-left {
  width: 560px;
  max-width: 100%;
  flex-shrink: 0;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 999px;
  background: rgba(79, 110, 247, 0.1);
  color: var(--primary-blue);
  font-size: 0.86rem;
  font-weight: 700;
  margin-bottom: 22px;
}

.pill-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--aurora-emerald);
}

/* 核心视觉：粗体无衬线字 H1（约 51px，后半句蓝绿极光渐变） */
.hero-h1 {
  font-size: 3.2rem; /* ~51.2px */
  font-weight: 900;
  color: var(--text-heading);
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.hero-h1 .aurora-text {
  background: var(--aurora-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.hero-selling-points {
  font-size: 1.08rem;
  color: var(--text-body);
  line-height: 1.75;
  margin-bottom: 32px;
}

.hero-buttons {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 40px;
}

.btn-primary-solid {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 15px 32px;
  border-radius: var(--radius-md);
  background: var(--aurora-btn-gradient);
  color: #FFFFFF;
  font-size: 1rem;
  font-weight: 800;
  box-shadow: 0 10px 24px rgba(79, 110, 247, 0.24);
  transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary-solid:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 28px rgba(79, 110, 247, 0.32);
}

.btn-secondary-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 15px 30px;
  border-radius: var(--radius-md);
  background: var(--card-white);
  color: var(--primary-blue);
  border: 1.5px solid rgba(79, 110, 247, 0.35);
  font-size: 1rem;
  font-weight: 700;
  transition: border-color 0.2s, background 0.2s;
}

.btn-secondary-outline:hover {
  border-color: var(--primary-blue);
  background: rgba(79, 110, 247, 0.04);
}

/* Hero 左下：一行 3 个数据点 */
.hero-mini-stats {
  display: flex;
  align-items: center;
  gap: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--border-light);
}

.mini-stat-item strong {
  display: block;
  font-size: 1.65rem;
  font-weight: 900;
  color: var(--primary-blue);
  line-height: 1.15;
}

.mini-stat-item span {
  font-size: 0.86rem;
  color: var(--text-body);
  font-weight: 600;
}

/* Hero 右列：520px 产品界面 mockup + 悬浮重叠图层小能力卡 */
.hero-right {
  width: 520px;
  max-width: 100%;
  position: relative;
  padding: 20px 0;
}

.mockup-window {
  background: var(--card-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-card);
  padding: 18px;
  position: relative;
  z-index: 1;
}

.mockup-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 12px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--border-light);
}

.mockup-dots {
  display: flex;
  gap: 6px;
}

.mockup-dots i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #CBD5E1;
  display: inline-block;
}

.mockup-dots i:first-child { background: #F87171; }
.mockup-dots i:nth-child(2) { background: #FBBF24; }
.mockup-dots i:nth-child(3) { background: #34D399; }

.mockup-status-tag {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--aurora-emerald);
  background: rgba(16, 185, 129, 0.1);
  padding: 3px 10px;
  border-radius: 999px;
}

.mockup-screen-img {
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--border-light);
}

/* 悬浮重叠图层卡片（右上 + 左下） */
.floating-badge-card {
  position: absolute;
  z-index: 2;
  background: var(--card-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-float);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.floating-badge-card.float-top-right {
  top: -4px;
  right: -18px;
}

.floating-badge-card.float-bottom-left {
  bottom: -6px;
  left: -20px;
}

.float-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: rgba(79, 110, 247, 0.1);
  color: var(--primary-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  flex-shrink: 0;
}

.float-icon.green {
  background: rgba(16, 185, 129, 0.12);
  color: var(--aurora-emerald);
}

.float-meta strong {
  display: block;
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--text-heading);
  line-height: 1.2;
}

.float-meta span {
  font-size: 0.78rem;
  color: var(--text-body);
}

/* ==========================================================================
   3. 功能区（6 张同构白卡，3 列 × 2 行，gap 28px）
   ========================================================================== */
.features-grid-6 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.white-card {
  background: var(--card-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 34px 28px;
  box-shadow: var(--shadow-card);
  transition: transform 0.2s, border-color 0.2s;
}

.white-card:hover {
  transform: translateY(-3px);
  border-color: rgba(79, 110, 247, 0.45);
}

.card-circle-icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: rgba(79, 110, 247, 0.1);
  color: var(--primary-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.white-card h3 {
  font-size: 1.22rem;
  font-weight: 800;
  color: var(--text-heading);
  margin-bottom: 10px;
}

.white-card p {
  font-size: 0.95rem;
  color: var(--text-body);
  line-height: 1.68;
}

/* ==========================================================================
   4. 使用流程（浅灰底，3 列横向步骤：数字序号 + 标题 + 一句说明）
   ========================================================================== */
.steps-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 36px;
}

.step-card {
  background: var(--card-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 32px 26px;
  text-align: center;
  box-shadow: var(--shadow-card);
}

.step-num-badge {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: var(--aurora-btn-gradient);
  color: #FFFFFF;
  font-size: 1.35rem;
  font-weight: 900;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.step-card h3 {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text-heading);
  margin-bottom: 8px;
}

.step-card p {
  font-size: 0.94rem;
  color: var(--text-body);
}

/* ==========================================================================
   5. 平台（4 列平台卡：Windows / macOS / iOS / Android）
   ========================================================================== */
.platforms-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.platform-card {
  background: var(--card-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 30px 22px;
  text-align: center;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: transform 0.2s, border-color 0.2s;
}

.platform-card:hover {
  transform: translateY(-3px);
  border-color: var(--primary-blue);
}

.plat-icon-wrap {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: rgba(79, 110, 247, 0.08);
  color: var(--primary-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.platform-card h3 {
  font-size: 1.18rem;
  font-weight: 800;
  color: var(--text-heading);
  margin-bottom: 6px;
}

.plat-req {
  font-size: 0.88rem;
  color: var(--text-body);
  margin-bottom: 6px;
}

.plat-ver {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--bg-alt);
  color: var(--primary-blue);
  font-size: 0.78rem;
  font-weight: 700;
  margin-bottom: 18px;
}

.btn-plat-dl {
  margin-top: auto;
  width: 100%;
  padding: 10px 0;
  border-radius: 10px;
  background: rgba(79, 110, 247, 0.1);
  color: var(--primary-blue);
  font-size: 0.9rem;
  font-weight: 700;
  transition: background 0.2s, color 0.2s;
}

.btn-plat-dl:hover {
  background: var(--primary-blue);
  color: #FFFFFF;
}

/* ==========================================================================
   6. 用户评价（浅灰底，3 列评价卡：五星 + 引言 + 头像缩写 / 姓名 / 身份）
   ========================================================================== */
.reviews-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.review-card {
  background: var(--card-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 32px 26px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.stars-five {
  color: #F59E0B;
  font-size: 1.05rem;
  letter-spacing: 2px;
  margin-bottom: 14px;
}

.review-quote {
  font-size: 0.96rem;
  color: var(--text-body);
  line-height: 1.75;
  margin-bottom: 24px;
}

.review-user {
  display: flex;
  align-items: center;
  gap: 12px;
}

.user-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--aurora-btn-gradient);
  color: #FFFFFF;
  font-weight: 800;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.user-info strong {
  display: block;
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--text-heading);
}

.user-info span {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ==========================================================================
   7. 数据条（4 列大数字居中：用户量、节点、在线率、评分）
   ========================================================================== */
.stats-band-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.stat-tile {
  background: var(--card-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 32px 20px;
  text-align: center;
  box-shadow: var(--shadow-card);
}

.stat-big-num {
  font-size: 2.5rem;
  font-weight: 900;
  background: var(--aurora-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.15;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-heading);
}

/* ==========================================================================
   8. 安全信任（两列：左产品图，右 4 条要点）
   ========================================================================== */
.security-split-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.security-visual-stack {
  position: relative;
}

.security-main-img {
  background: var(--card-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 14px;
  box-shadow: var(--shadow-card);
}

.security-main-img img {
  border-radius: 10px;
}

.security-points-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.sec-point-card {
  background: var(--card-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 20px 22px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  box-shadow: var(--shadow-card);
}

.sec-point-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: rgba(79, 110, 247, 0.1);
  color: var(--primary-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-weight: 800;
}

.sec-point-body h4 {
  font-size: 1.08rem;
  font-weight: 800;
  color: var(--text-heading);
  margin-bottom: 4px;
}

.sec-point-body p {
  font-size: 0.92rem;
  color: var(--text-body);
}

/* ==========================================================================
   9. FAQ（单列手风琴，最大宽 800px，8–12 题，答案简短 3–6 行）
   ========================================================================== */
.faq-container-800 {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--card-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.faq-item[open] {
  border-color: var(--primary-blue);
}

.faq-item summary {
  padding: 18px 22px;
  font-size: 1.02rem;
  font-weight: 800;
  color: var(--text-heading);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--primary-blue);
}

.faq-item[open] summary::after {
  content: "−";
}

.faq-ans {
  padding: 0 22px 18px;
  font-size: 0.94rem;
  color: var(--text-body);
  line-height: 1.7;
}

/* ==========================================================================
   子页面专用：套餐卡片（用于下载页与价格页）
   ========================================================================== */
.pricing-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.plan-white-card {
  background: var(--card-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  position: relative;
}

.plan-white-card.popular {
  border: 2px solid var(--primary-blue);
  box-shadow: var(--shadow-float);
}

.popular-pill {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--aurora-btn-gradient);
  color: #FFFFFF;
  font-size: 0.76rem;
  font-weight: 800;
  padding: 3px 14px;
  border-radius: 999px;
}

.plan-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-heading);
  margin-bottom: 12px;
}

.plan-price {
  font-size: 2.4rem;
  font-weight: 900;
  color: var(--text-heading);
  line-height: 1.1;
  margin-bottom: 6px;
}

.plan-price small {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
}

.plan-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.plan-perks {
  list-style: none;
  margin-bottom: 26px;
  flex-grow: 1;
}

.plan-perks li {
  font-size: 0.9rem;
  color: var(--text-body);
  margin-bottom: 10px;
}

/* ==========================================================================
   10. 页脚（直接进深蓝 #0B1023，左品牌简介 + 右三列链接 + 底部版权）
   ========================================================================== */
.site-footer {
  background-color: var(--bg-footer);
  color: rgba(255, 255, 255, 0.72);
  padding: 68px 0 32px;
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 44px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand p {
  margin-top: 14px;
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 340px;
  color: rgba(255, 255, 255, 0.65);
}

.footer-brand .brand-logo {
  color: #FFFFFF;
}

.footer-col h4 {
  font-size: 0.98rem;
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 16px;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 10px;
}

.footer-col a {
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.68);
  transition: color 0.2s;
}

.footer-col a:hover {
  color: #FFFFFF;
}

.footer-bottom {
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.84rem;
  color: rgba(255, 255, 255, 0.5);
}

/* ==========================================================================
   响应式：移动端汉堡菜单 + Hero 居中单列
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-flex {
    flex-direction: column;
    text-align: center;
    gap: 40px;
  }
  .hero-left,
  .hero-right {
    width: 100%;
  }
  .hero-buttons,
  .hero-mini-stats {
    justify-content: center;
  }
  .features-grid-6 {
    grid-template-columns: repeat(2, 1fr);
  }
  .platforms-grid-4,
  .stats-band-4,
  .pricing-grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .security-split-2 {
    grid-template-columns: 1fr;
  }
  .footer-top-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .hamburger-btn {
    display: inline-flex;
  }
  .header-nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--card-white);
    flex-direction: column;
    padding: 20px 24px;
    gap: 16px;
    border-bottom: 1px solid var(--border-light);
    box-shadow: var(--shadow-card);
  }
  .nav-toggle-checkbox:checked ~ .header-nav {
    display: flex;
  }
  .hero-section {
    min-height: auto;
    padding: 108px 0 56px;
  }
  .hero-h1 {
    font-size: 2.25rem;
  }
  .sec-head h2 {
    font-size: 1.85rem;
  }
  .features-grid-6,
  .steps-grid-3,
  .platforms-grid-4,
  .reviews-grid-3,
  .stats-band-4,
  .pricing-grid-4,
  .footer-top-grid {
    grid-template-columns: 1fr;
  }
  .floating-badge-card.float-top-right,
  .floating-badge-card.float-bottom-left {
    position: static;
    margin-top: 12px;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 10px;
    text-align: center;
  }
}